matija

solution (works for me):
add code below after $_COOKIE = array ();

if ( !isset( $HTTP_RAW_POST_DATA ) ) {
  $HTTP_RAW_POST_DATA = file_get_contents( 'php://input' );
}

i found better solution, this was not cool with me:

xmlrpc.php, add below code after $_COOKIE = array();

if ( !isset( $HTTP_RAW_POST_DATA ) ) {
$HTTP_RAW_POST_DATA = file_get_contents( ‘php://input’ );
}